Rok 2025

• A Miniaturized and High Optically Transparent Frequency Selective Surface for RF Shielding using Double-Glazed Glass Windows for Green Building Applications

  Publikacja

  • M. Nasir
  • S. Kozieł
  • A. Iftikhar

  - IEEE Access - Rok 2025

  This research presents a miniaturized and high optically transparent (OT) frequency selective surface (FSS) for achieving RF shielding through glass window panels. The proposed FSS consists of a single-layered copper pattern sandwiched between two ordinary glass substrates to suppress the dual bands of sub-6 fifth generation (5G). In particular, the design effectively shields n65-downlink (2.1 GHz) and a portion of n78-band (3.5...

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• A Non-PCM-Based 2 × 2 MIMO Antenna Array With Low Radar Cross-Section Using Characteristic Mode Analysis

  Publikacja

  • M. Elahi
  • S. Kozieł
  • L. Leifsson

  - IEEE Access - Rok 2025

  In this paper, we introduced a 2×2 multiple-input-multiple-output (MIMO) antenna array using a non-polarization conversion metasurface (NPCM) with reduced radar cross section (RCS). To achieve a low RCS, a chess-board configuration is typically adopted. However, in conventional NPCM designs, subarrays with 180◦ phase shifts apart exhibit radiating modes at different resonance frequencies due to varied unit cell sizes and spacing....

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• Beyond Finance: Enhancing Support for New Technology Start-up Founders

  Publikacja

  • P. Ziemiański
  • K. Stankiewicz
  • J. Wyrwiński
  • S. Retowski
  • B. Lipnicki

  - IEEE Access - Rok 2025

  The article addresses a gap in the literature by examining the stressors and challenges specific to new technology start-up founders, an under-researched group of entrepreneurs operating at the intersection of innovation and business. The study’s novelty lies in applying the Job Demands-Resources (JD-R) model to the venture capitalist-founder relationship, highlighting the importance of balancing high job demands with adequate...

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• Decoding Customer Experience: A Comparative Analysis of Electric and Internal Combustion Vehicles in the U.S. Market Through Structured Topic Modeling

  Publikacja

  • N. Rizun
  • B. Duzinkewicz

  - IEEE Access - Rok 2025

  Amid global environmental challenges, the transition from internal combustion vehicles (ICVs) to electric vehicles (EVs) is a priority for governments and automobile manufacturers. This shift requires a deep understanding of consumer preferences and evolving adoption trends. Existing research highlights critical gaps, such as the lack of comparative studies analyzing EVs and ICVs’ consumer-perceived value and their evolution over...

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• Enhanced Gain and Isolation Dual-Band Dual-Port MIMO Antenna with Integrated Lens for Millimeter-wave 5G Internet-of-Things Applications

  Publikacja

  • B. Malik
  • S. Khan
  • J. Nasir
  • S. Kozieł

  - IEEE Access - Rok 2025

  This paper proposes a dual-band dual-port Multiple Input Multiple Output (MIMO) antenna with enhanced gain and port isolation for 5G millimeter-wave (mm-wave) Internet of Things (IoT) applications. The gain enhancement is achieved using a 3D-printed dielectric lens integrated with the antenna, whereas port isolation is improved using a novel 2D compact metamaterial incorporated between the MIMO elements. The proposed integrated...

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• Evaluation of Selected Modulation Techniques in Underwater Multipath Channel

  Publikacja

  • A. Czapiewska
  • A. Łuksza
  • R. Studański
  • Ł. Wojewódka
  • A. Żak

  - IEEE Access - Rok 2025

  There is a growing interest in the use of Autonomous Underwater Vehicles (AUVs) and Underwater Sensor Networks (USNs) for scientific, military, and industrial applications, leading to the development of wireless underwater communications. However, the channel for Underwater Acoustic (UWA) communications is challenging compared to the radio wave propagation in the air. Especially in shallow waters, where the channel has strong multipath...

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• High-Efficiency Switched-Capacitor Multilevel Inverter Topology with Lower Number of Switching Components

  Publikacja

  • A. Iqbal
  • A. Awadelseed
  • J. Guziński

  - IEEE Access - Rok 2025

  Increasing the output voltage of sources such as photovoltaic (PV), fuel cells, and battery storage devices requires a boost action. The proposed switched capacitor multilevel inverter (SCMLI) topology incorporates nine power semiconductor switches, a dual DC voltage source, and a single capacitor, capable of generating a nine-level output voltage with dual voltage gain. Additional features of the proposed SCMLI topology include...

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• Modeling 5G-NR-Based Positioning Accuracy in Urban Environments

  Publikacja

  • P. Rajchowski
  • L. M. Correia
  • P. Tareco
  • K. Cwalina

  - IEEE Access - Rok 2025

  Modeling phenomena influencing radiocommunication networks, such as 5G-NR, is a key aspect during their development and further optimization. In this paper, one proposes a model, for three different scenario types in urban environments, for user localization accuracy. The model is supported by measurements of real 5G-NR downlink signals carried out in three different urban environments, corresponding to the typical user localization....

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• Optimized metamaterials for design of enhanced-performance high order mode dipole-driven Yagi-Uda antenna for millimeter wave applications

  Publikacja

  • B. Esmail
  • D. Isleifson
  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - IEEE Access - Rok 2025

  This paper presents the development of a Yagi antenna optimized for third-order mode operation within the millimeter-wave (mmWave) spectrum. A third-order mode driven dipole, along with a reflector, is introduced to enhance the antenna's gain. The rigorous numerical optimization procedure was employed to precisely adjust the dimensions and positions of the driven dipole, director, and reflectors. The optimized Yagi antenna operates...

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• Power Transmission for Millimeter-Wave Indoor/Outdoor Wearable IoT Devices Using Grounded Coplanar Waveguide-Fed On-Body Antenna

  Publikacja

  • F. Erman
  • S. Kozieł
  • A. Zyoud
  • L. Leifsson
  • U. Ubaid
  • S. Alkaraki

  - IEEE Access - Rok 2025

  This paper presents for the first-time evaluation of wireless power transmission (WPT) for sustainable low-powered Internet of Things (IoT) devices in realistic indoor/outdoor scenarios using empirical propagation models at 28 GHz. The used empirical propagation models have shown that using an on-body 9×9 mm-wave rectenna array based on a proposed mm-wave antenna is able to charge IoT devices at a distance of 57 m for line-of-sight...

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• SDN Controller for Optical Network Control

  Publikacja

  • S. Kaczmarek
  • M. Młynarczuk
  • M. Sac
  • P. Miklaszewski

  - IEEE Access - Rok 2025

  The ability of centralized programming flow tables in switches and routers to perform programmable resource control and management from the central controller under the Software Defined Networking (SDN) concept has introduced a new approach to controlling and managing network resources. The main principles of the SDN concept, as defined by the Open Networking Foundation (ONF), apply primarily to packet networks, making the usage...

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• Self-Isolation in MIMO Array Using Mode Diversity

  Publikacja

  • M. Elahi
  • S. Kozieł
  • L. Leifur

  - IEEE Access - Rok 2025

  A new isolation technique is proposed for multiple-input multiple-output (MIMO) microstrip patch antenna (MPA) arrays utilizing mode’s diversity. Typically, similar modes are excited in each element of the MIMO array. However, the proposed MIMO array uses two elements of different sizes excited in distinct modes at the same frequency. It is found that the TM01 mode excited in one MPA, a hybrid mode (TM03+TM21) is induced in the...

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• Ship Magnetic Signature Classification Using GRU-Based Recurrent Neural Networks

  Publikacja

  • K. Zielonacki
  • J. Tarnawski
  • M. Wołoszyn

  - IEEE Access - Rok 2025

  Magnetic signatures represent the magnetic field generated by a ship’s ferromagnetic components and provide valuable information for identifying vessels not only in naval operations, but also in civil passages. The topic of accurate modelling of these signatures is relevant to this day, but also the complexity of the model necessary to accurately predict the ship’s magnetic field. This paper presents the implementation of a deep,...

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• Survey of Asynchronous Radiolocation Methods

  Publikacja

  • J. Stefański
  • J. Sadowski

  - IEEE Access - Rok 2025

  This publication reviews asynchronous radiolocation methods, emphasizing their analytical descriptions. Radiolocation systems evolve through the integration of advancements from multiple scientific disciplines, including telecommunications, computer science, electronics, and digital signal processing, making them inherently interdisciplinary. Most existing literature focuses on radiolocation systems with synchronized reference...

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• Two Approaches to Constructing Certified Dominating Sets in Social Networks

  Publikacja

  • J. Raczek
  • M. Miotk

  - IEEE Access - Rok 2025

  Social networks are an important part of our community. In this context, certified dominating sets help to find in networks a group of people, referring as officials, such that 1) for each civilian, there is an official that can serve the civilian, and 2) no official is adjacent to exactly one civilian, to prevent potential abuses. To delve deeper into this topic, this study considers two approaches to the problem of finding certified...

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Rok 2024

• 3-D Printable Metal-Dielectric Metasurface for Risley Prism-Based Beam-Steering Antennas

  Publikacja

  • M. Y. Ali
  • A. Lalbakhsh
  • K. Singh
  • S. Kozieł
  • Ł. Gołuński

  - IEEE Access - Rok 2024

  A 3-D printable, planar, metal-dielectric metasurface-based, 2-D beam-steering system for aperture-type antennas is presented in this paper. This beam steering system, also known as the near-field meta-steering system, comprises two fully passive phase-gradient metasurfaces placed in the antenna’s nearfield region to steer the radiation beam. To address the non-uniform electric field phase of the aperture antenna, phase correction...

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• A Highly Compact Split Ring Resonator Based Rectangular Dielectric Resonator Antenna with Multiband Characterization

  Publikacja

  • S. Khan
  • O. Khan
  • K. Raheel
  • S. A. A. Shah
  • B. Malik
  • S. Khan
  • N. Gohar
  • S. Kozieł

  - IEEE Access - Rok 2024

  This work encompasses a novel highly compact Split Ring Resonator (SRR) based quad-band Dielectric Resonator Antenna (DRA) for 4G and 5G applications. The proposed antenna comprises of an extended rectangular feedline and a rectangular DR in combination with two SRRs. The DRA uses the extended rectangular microstrip feedline for providing better impedance matching and enhanced performance. Remarkably, the introduction of SRRs on...

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• An Optimized Ka-Band Low Profile Dual-Polarized Transmitarray Antenna With 2D Beam Switching

  Publikacja

  • S. H. Ramazannia Tuloti
  • A. Lamęcki
  • M. Mrozowski

  - IEEE Access - Rok 2024

  This article presents an optimized dual-polarized transmitarray antenna (TA) designed for MIMO applications at the Ka-band, capable of switching beams in two directions. The antenna aperture uses a small unit cell with three layers of Taconic RF-35 dielectric substrates, which can be easily fabricated using PCB technology. The unit cell achieved a 360-degree phase shift and a transmission magnitude exceeding –0.4 dB at 28 GHz....

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• Availability of UAV Fleet Evaluation Based on Multi-State System

  Publikacja

  • E. Zaitseva
  • V. Levashenko
  • V. Mysko
  • S. Czapp
  • D. Zhaxybayev

  - IEEE Access - Rok 2024

  Unmanned Aerial Vehicle (UAV) applications are extended extremely. Some applications need to use several UAVs for a general mission which can be considered a UAV fleet. One of the important characteristics for the evaluation of a UAV or UAV fleet is reliability. There are studies in which methods for analysis of their reliability are considered. Reliability analysis of UAV fleets is less frequently studied, although a single UAV...

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• CNN-CLFFA: Support Mobile Edge Computing in Transportation Cyber Physical System

  Publikacja

  • A. Bhansali
  • R. Kumar Patra
  • P. Bidare Divakarachari
  • P. Falkowski-Gilski
  • G. Shivakanth
  • S. N. Patil

  - IEEE Access - Rok 2024

  In the present scenario, the transportation Cyber Physical System (CPS) improves the reliability and efficiency of the transportation systems by enhancing the interactions between the physical and cyber systems. With the provision of better storage ability and enhanced computing, cloud computing extends transportation CPS in Mobile Edge Computing (MEC). By inspecting the existing literatures, the cloud computing cannot fulfill...

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• Compact Substrate-Integrated Hexagonal Cavity-Backed Self-Hexaplexing Antenna for Sub-6 GHz Applications

  Publikacja

  • V. Jayaprakash
  • D. Chandu
  • R. K. Barik
  • S. Kozieł

  - IEEE Access - Rok 2024

  A self-multiplexing SIW antenna based on hexagonal SIW cavity is proposed. The self-hexaplexing antenna consists of different sizes of resonating elements, which provide the hexaband operations. The antenna resonates at 5 GHz, 5.17 GHz, 5.32 GHz, 5.53 GHz, 5.62 GHz, and 5.72 GHz by employing different slot lengths between the resonating elements. The proposed antenna provides the individual tunable characteristics of the operating...

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• Comparison of Doppler Effect Estimation Methods for MFSK Transmission in Multipath Hydroacoustic Channel

  Publikacja

  • A. Czapiewska
  • A. Łuksza
  • R. Studański
  • Ł. Wojewódka
  • A. Żak

  - IEEE Access - Rok 2024

  Underwater wireless communication remains a challenging topic, particularly for applications such as wreck penetration where multipath and Doppler effects are very intense. These effects are becoming even more difficult to mitigate for fast data transmission systems that utilize wideband signals. Due to the low propagation speed of acoustic wave in the water, there is a significant difference between the Doppler shift for lower...

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• Concept of Wireless Low-Voltage DC Socket for the Residential House Application

  Publikacja

  • V. Shevchenko
  • O. Husev
  • B. Pakhaliuk
  • D. Vinnikov
  • R. Strzelecki

  - IEEE Access - Rok 2024

  The proposed research is devoted to the comprehensive theoretical and experimental study of the concept of the wireless low power dc socket for residential applications. The main goal of this work is to provide safe dc source for residential customers at power level which is enough in order to supply all typical appliances without power factor correctors. Such types of devices can be already connected to the dc grid and decoupled...

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• Cost-Efficient Globalized Parameter Optimization of Microwave Components through Response-Feature Surrogates and Nature-Inspired Metaheuristics

  Publikacja

  • A. Pietrenko-Dąbrowska
  • S. Kozieł
  • Ł. Gołuński

  - IEEE Access - Rok 2024

  Design of contemporary microwave devices predominantly utilizes computational models, including both circuit simulators, and full-wave electromagnetic (EM) evaluation. The latter constitutes the sole generic way of rendering accurate assessment of the system outputs that considers phenomena such as cross-coupling or radiation and dielectric losses. Consequently, for reliability reasons, the final tuning of microwave device parameters...

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• Design of a Wideband High-Gain Monopulse Antenna for X- and Ku-Bands Applications

  Publikacja

  • Z. Xing Chen
  • A. Farahbakhsh
  • J. Xin Lv
  • H. Su
  • X. Y. Zhang

  - IEEE Access - Rok 2024

  The present study provides a wideband high-gain monopulse antenna based on a dielectric lens operating in X- and Ku-bands, in which a wideband dielectric lens is designed and employed to fulfill the radiation pattern and bandwidth necessities of a monopulse antenna. The proposed configuration has four horns allowing for the simultaneous creation of 1 and 6 designs in two perpendicular planes. The main advantages of the proposed...

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• Design of Compact and Wideband Groove Gap Waveguide-Based Directional Couplers

  Publikacja

  • M. Rabbanifard
  • D. Zarifi
  • A. Farahbakhsh
  • M. Mrozowski

  - IEEE Access - Rok 2024

  This paper proposes a compact cross-shaped groove gap waveguide structure for creating wideband and compact directional couplers with different coupling levels. Groove gap waveguide technology is applied to overcome fabrication challenges of printed and hollow waveguide structures in high frequency bands. The validity of the novel concept is demonstrated through the design and evaluation of several compact broadband directional...

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• Energy-Efficient Joint User and Power Allocation in 5G Millimeter Wave Networks: A Genetic Algorithm-Based Approach

  Publikacja

  • A. Fayad
  • T. Cinkler

  - IEEE Access - Rok 2024

  Reducing power consumption is a pivotal challenge in 5G millimeter wave (mmWave) networks due to the density of the base stations (BSs) in these networks. In this paper, we focus on the joint user and power allocation problem in 5G mmWave networks, aiming to minimize power consumption while maintaining the user Quality of Service (QoS), considering the BSs switching on/off strategy. Initially, we formulate the problem as an Integer...

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• Global Roots and Poles Finding Algorithm on Quantum Computer

  Publikacja

  • J. Buczkowski
  • T. Koźmiński
  • F. Szczepański
  • M. Wiliński
  • T. Stefański

  - IEEE Access - Rok 2024

  In this paper, the implementation of the global roots and poles finding algorithm for a complex-valued function of a complex variable on a quantum computer, which allows for solving general nonlinear algebraic equations, is presented. The considered function is sampled with the use of Delaunay’s triangulation on the complex plane and a phase quadrant, in which the value of the function is located, is computed on a classical computer...

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• High data-rate Hilbert-curved-shaped MIMO antenna with improved bandwidth and circular polarization for wireless cap-sule endoscopy

  Publikacja

  • S. M. un Noor
  • S. A. A. Shah
  • S. Khan
  • I. A. Shah
  • J. Nasir
  • S. Khan
  • S. Kozieł

  - IEEE Access - Rok 2024

  The growing demand for wireless communication in biomedical engineering has opened new research frontiers. This paper introduces an innovative miniaturized (4 × 9 mm2) multiple-input multiple-output (MIMO) circularly polarized (CP) implantable antenna for a wireless capsule endoscopy (WCE) system. The presented device features two Hilbert curve-shaped meandered resonators. The space-filling characteristic inherent in the Hilbert...

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• Impact Assessment of Electric Vehicles Integration and Optimal Charging Schemes Under Uncertainty: A Case Study of Qatar

  Publikacja

  • S. Deshmukh
  • H. Tariq
  • M. Amir
  • A. Iqbal
  • M. Marzband
  • A. M. A. B. Al-Wahedi

  - IEEE Access - Rok 2024

  The integration of electric vehicles (EVs) is rapidly growing compared to conventional vehicles in Qatar. To assess how these electric vehicles will impact Qatar’s distribution network, it is necessary to accurately model EV loads. However, EV loads exhibit uncertainties due to driving behaviour in charging time, state of charge (SOC), number of trips, and distance travelled. This necessitates the development of a probabilistic...

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• Impact of SDN Controller’s Performance on Quality of Service

  Publikacja

  • S. Kaczmarek
  • J. A. Litka (dawniej: J. Litka)

  - IEEE Access - Rok 2024

  Software Defined Networking is a paradigm in network architecture; that is quickly becoming commonplace in modern telecommunication systems. It facilitates network customization for the requirements of different applications and simplifies the implementation of new services. Since its proposal, a significant evolution in its functionality has occurred. However, this development brought along problems of efficiency and performance,...

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• Improved Bandwidth of Microstrip Wide-Slot Antenna Using Gielis Curves

  Publikacja

  • D. Zarifi
  • A. Farahbakhsh
  • M. Mrozowski

  - IEEE Access - Rok 2024

  The development of a broadband printed wide-slot antenna based on Gielis curves is presented in this article. The printed wide-slot antenna can be conveniently reshaped to achieve ultra-wideband performance by using superformula. The distinct advantage of employing the superformula in design of wide-slot antenna lies in its ability to define nearly any geometric shape including non-standard, complex and non-intuitive for the wide-slot...

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• Improving Output Performance of the Ultrasonic Multicell Piezoelectric Motor by Development the Multi-Rotor Structure

  Publikacja

  • R. Ryndzionek

  - IEEE Access - Rok 2024

  In recent years, many researches have been carried out on piezoelectric multi-rotor structures. This paper describes the analysis, development and experimental process of an ultrasonic multi-cell piezoelectric motor using a multi-rotor structure. In this design, three independent cells have been integrated into a mechatronic system. Analytical model and finite element method are used for modal and dynamic analysis of the proposed...

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• Infographics in Educational Settings: A Literature Review

  Publikacja

  • S. A. Bhat
  • S. Alyahya

  - IEEE Access - Rok 2024

  Infographics are visual representations of data that utilize various graphic elements, including pie charts, bar graphs, line graphs, and histograms. Educators and designers can maximize the potential of infographics as powerful educational tools by carefully addressing challenges and capitalizing on emerging technologies. However, current education systems showcase the need for development guidelines and the best practices targeted...

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• Inline Waveguide Sharp-Rejection Bandpass Filters With Transmission Zeros Using Resonant Coupling Slots

  Publikacja

  • L. Iram
  • M. Y. Sandhu
  • A. Lamęcki
  • R. Gómez-García
  • M. Mrozowski

  - IEEE Access - Rok 2024

  This work presents a design methodology for synthesizing a category of compact inline sharp-rejection waveguide cavity bandpass filters based on novel frequency-variant coupling (FVC) structures. These FVCs consist of a rectangular slot placed in the top broadwall of the WR-90 rectangular waveguide and loaded with an additional top cavity above the slot coupled through the slot. Both the slot and the top cavity resonate in the...

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• Looking through the past: better knowledge retention for generative replay in continual learning

  Publikacja

  • V. Khan
  • S. Cygert
  • K. Deja
  • T. Trzciński
  • B. Twardowski

  - IEEE Access - Rok 2024

  In this work, we improve the generative replay in a continual learning setting to perform well on challenging scenarios. Because of the growing complexity of continual learning tasks, it is becoming more popular, to apply the generative replay technique in the feature space instead of image space. Nevertheless, such an approach does not come without limitations. In particular, we notice the degradation of the continually trained...

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• Loss Minimization-Based Sensorless Control of High-Speed Induction Motor Considering Core Loss

  Publikacja

  • T. Ayana
  • P. Kołodziejek
  • M. Morawiec
  • L. Wogi

  - IEEE Access - Rok 2024

  This paper presents loss-minimizing sensorless control (LMC) strategies utilized to optimize the energy of high-speed induction motor (HSIM) drives. A machine’s ability to operate effectively depends on the estimation of its electrical losses. Although copper losses account for the majority of electrical losses in electrical machines, core loss also contributes a major part, particularly in high-speed induction motors. A review...

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• Low-cost multiband four-port phased array antenna for sub-6 GHz 5G applications with enhanced gain methodology in Radio-over-fiber systems using modulation instability

  Publikacja

  • H. Zakeri
  • R. Azizpour
  • P. Khoddami
  • G. Moradi
  • M. Alibakhshikenari
  • C. H. See
  • T. A. Denidni
  • F. Falcone
  • S. Kozieł
  • E. Limiti

  - IEEE Access - Rok 2024

  Phased array antenna (PAA) technology is essential for applications requiring high gain and wide bandwidth, such as sensors, medical, and 5G. Achieving such a design, however, is a challenging and intricate process that calls for precise calculations and a combination of findings to alter the phase and amplitude of each unit. Furthermore, coupling effects between these PAA structure elements can only be completed with the use of...

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• Low-Loss 3D-Printed Waveguide Filters Based on Deformed Dual-Mode Cavity Resonators

  Publikacja

  • M. Baranowski
  • Ł. Balewski
  • A. Lamęcki
  • M. Mrozowski

  - IEEE Access - Rok 2024

  This paper introduces a new type of waveguide filter with smooth profile, based on specially designed dual-mode (DM) cavity resonators. The DM cavity design is achieved by applying a shape deformation scheme. The coupling between the two orthogonal cavity modes is implemented by breaking the symmetry of the structure, thus eliminating the need for additional coupling elements. The modes operating in the cavity are carefully analyzed...

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• Millimeter Wave Wideband and Low-Loss Compact Power Divider Based on Gap Waveguide: For Use in Wideband Antenna Array System

  Publikacja

  • A. Kalantari Khandani
  • A. Farahbakhsh
  • D. Zarifi
  • A. Uz Zaman

  - IEEE Access - Rok 2024

  This paper presents a wideband and low-loss design of a compact power divider based on gap waveguide technology. The proposed power divider consists of two adjacent E-plane groove gap waveguide and a small ridge section to couple and equally divide the EM energy from the input E-plane groove gap waveguide to the two output ones in-phase. The simulation results show that the proposed waveguide power divider has about 40% impedance...

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• Modelling and Control of a Brushless Multiphase Doubly-Fed Induction Generator in a Stand-Alone Wind Generation System

  Publikacja

  • K. Blecharz
  • R. Ryndzionek
  • F. Kutt

  - IEEE Access - Rok 2024

  The development of the novel multiphase brushless doubly-fed generator system and voltage controller for stand-alone mode configuration is proposed in this paper. The generator system is based on the new machine construction with multiphase control winding and traditional three-phase power winding. The dynamic model of multiphase brushless doubly-fed generator is presented, and the control strategy for voltage amplitude and frequency...

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• Multiscalar Control Based Airgap Flux Optimization of Induction Motor for Loss Minimization

  Publikacja

  • T. Ayana
  • M. Morawiec
  • L. Wogi

  - IEEE Access - Rok 2024

  Based on the induction motor model, considering the core loss resistance that accounts for magnetic characteristic saturation, a speed control approach is devised with an adaptive full-order (AFO) speed observer. The induction motor model analysis is done sincerely in a stationary reference frame. The control approach incorporates a flux reference generator designed to meet optimal operational circumstances and a nonlinear speed...

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• Nature-Inspired Driven Deep-AI Algorithms for Wind Speed Prediction

  Publikacja

  • M. Dilshad Sabir
  • L. Khan
  • K. Hafeez
  • Z. Ullah
  • S. Czapp

  - IEEE Access - Rok 2024

  Predicting wind energy production accurately is crucial for enhancing grid management and dispatching capacity. However, the inherent unpredictability of wind speed poses significant challenges to achieving high prediction accuracy. To address this challenge, this study introduces a novel pre-processing framework that leverages thirteen nature-inspired optimization algorithms to extract and combine Intrinsic Mode Functions (IMFs)...

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• Optimizing Control of Wastewater Treatment Plant With Reinforcement Learning: Technical Evaluation of Twin-Delayed Deep Deterministic Policy Gradient Agent

  Publikacja

  • Z. Klawikowska
  • M. Grochowski

  - IEEE Access - Rok 2024

  Control of the wastewater treatment processes presents significant challenges due to the fluctuating nature of inflow and wastewater composition, alongside the system’s non-linear dynamics. Traditional control methods struggle to adapt to these variations, leading to an economically suboptimal operation of the process and a violation of norms imposed on the quality of wastewater discharged to the catchment area. This study proposes...

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• People’s Influence on Indoor Body Area Networks Channel Characteristics

  Publikacja

  • S. J. Ambroziak (dawniej: S. Ambroziak)
  • F. D. Cardoso
  • M. M. Ferreira
  • M. Särestöniemi
  • L. M. Correia

  - IEEE Access - Rok 2024

  The influence of people’s presence on wideband off-body channel characteristics is presented in this paper. This research is significant for the development of Body Area Networks, as a promising solution for 5G and 6G networks, namely as an emerging technology expected to revolutionize mobile healthcare via real-time monitoring and analysis of medical data. The analysis is based on power delay profile measurements performed in...

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• Practical Trial for Low-Energy Effective Jamming on Private Networks With 5G-NR and NB-IoT Radio Interfaces

  Publikacja

  • P. Skokowski
  • K. Malon
  • M. Kryk
  • K. Maślanka
  • J. M. Kelner
  • P. Rajchowski
  • J. Magiera

  - IEEE Access - Rok 2024

  Fourth-generation (4G) mobile networks are successively replaced by fifth-generation (5G) ones, based on the new releases of the 3rd Generation Partnership Project (3GPP) standard. 5G generation is dedicated to civilian users and the conducted analytical work shows that it has numerous technological gaps that prevent its direct implementation in military communications systems. However, the recent armed world conflicts showed that...

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• Review of Recent Advancement on Nature/Bio-inspired Antenna Designs

  Publikacja

  • F. Azam
  • S. Shah
  • S. Bashir
  • S. Kozieł

  - IEEE Access - Rok 2024

  This article presents an extensive examination of antennas rooted in nature and biology, showcasing their remarkable performance across a wide spectrum of frequencies—from microwave to terahertz. The limitations of traditional antenna design have become increasingly evident in the face of burgeoning demands for novel communication technologies. Conventional analytical-equation-based approaches struggle to deliver the combined performance...

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• Sensorless Control of Induction Motor Based on Super-Twisting Sliding Mode Observer With Speed Convergence Improvement

  Publikacja

  • L. Wogi
  • M. Morawiec
  • T. Ayana

  - IEEE Access - Rok 2024

  The super twisting sliding-mode observer (ST-SMO) has been proposed to achieve an effective method for alleviating low-order harmonics of measured quantities, issues related to DC drift, and suppression of chattering due to low-frequency sampling. The conventional ST-SMO, on the other hand, suffers from control delay in the convergence trajectory due to the system disturbance, resulting in decreased anti-disturbance capability...

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• Sensorless Predictive Multiscalar-Based Control of the Five-Phase IPMSM

  Publikacja

  • D. Vyas
  • M. Morawiec
  • G. A. Kostro (dawniej: G. Kostro)
  • A. JąDerko
  • J. Baran

  - IEEE Access - Rok 2024

  This article proposes multi-scalar variables based predictive control of sensorless multiphase interior permanent magnet synchronous machine. Estimated parameters from adaptive observers are used to implement the proposed control scheme. The control approach is divided into two parts: for the fundamental plane, torque and its dual quantity from the multi-scalar model are directly predicted by the controller, and torque density...

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• Single-Phase 15-Level Switched-Capacitor Boost Multilevel Inverter Topology for Renewable Energy Applications

  Publikacja

  • A. Awadelseed
  • A. Lewicki
  • A. Iqbal

  - IEEE Access - Rok 2024

  Galvanic isolation is a vital part of a grid-connected solar PV system. With the growth of multilevel inverters for grid-connected applications, the multilevel inverters having isolation are not sufficiently discussed in the literature. In this paper, a 15-level isolated multilevel inverter topology requiring only thirteen switches is proposed. The envisaged configuration includes two cells, designated as upper and lower cells....

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